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Finding the Fourth Proportional to 1,350.98, 2,025.10 and 657.21

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Solution

The fourth proportional to 1,350.98, 2,025.10 and 657.21 is: 985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.98 : 2,025.10 = 657.21 : x
  2. Step 2: Convert to fraction form
    1,350.98/2,025.10 = 657.21/x
  3. Step 3: Cross multiply
    1,350.98x = 2,025.10 × 657.21
  4. Step 4: Simplify right side
    1,350.98x = 1,330,924.39
  5. Step 5: Solve for x
    x = 1,330,924.39/1,350.98
  6. Step 6: Final answer
    x = 985.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.